WO2014021987A1 - Apparatus and method for small data transmission in 3gpp-lte systems - Google Patents

Apparatus and method for small data transmission in 3gpp-lte systems Download PDF

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Publication number
WO2014021987A1
WO2014021987A1 PCT/US2013/044445 US2013044445W WO2014021987A1 WO 2014021987 A1 WO2014021987 A1 WO 2014021987A1 US 2013044445 W US2013044445 W US 2013044445W WO 2014021987 A1 WO2014021987 A1 WO 2014021987A1
Authority
WO
WIPO (PCT)
Prior art keywords
small data
rrc connection
message
data payload
enb
Prior art date
Application number
PCT/US2013/044445
Other languages
English (en)
French (fr)
Inventor
Marta MARTINEZ TARRADELL
Sangeetha L. Bangolae
Puneet Jain
Varun RAO
Original Assignee
Intel Corporation
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Intel Corporation filed Critical Intel Corporation
Priority to EP13825895.9A priority Critical patent/EP2880784B1/en
Priority to KR1020147036954A priority patent/KR20150016612A/ko
Priority to KR1020167005515A priority patent/KR101721031B1/ko
Priority to IT001289A priority patent/ITMI20131289A1/it
Priority to TW102127609A priority patent/TWI503032B/zh
Priority to FR1357687A priority patent/FR2994357A1/fr
Priority to BE2013/0521A priority patent/BE1021410B1/fr
Priority to ES201331208A priority patent/ES2481265B2/es
Priority to FI20135807A priority patent/FI20135807L/fi
Priority to SE1350931A priority patent/SE540741C2/sv
Priority to NL2011257A priority patent/NL2011257C2/en
Priority to CN201310336123.8A priority patent/CN103582006B/zh
Publication of WO2014021987A1 publication Critical patent/WO2014021987A1/en

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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Definitions

  • Embodiments pertain to wireless communications. Some embodiments pertain to wireless communications used in Long-Term Evolution (LTE) networks.
  • LTE Long-Term Evolution
  • Machines often need to communicate with other machines with little or no human intervention. In the past, such communications were made via wire. As time went on, wireless communications began to be used. With the increased availability of mobile broadband, machine type communications (MTC) via mobile broadband is becoming more and more popular. MTC enables communications between remote machines for the exchange of information and operating commands without the need for human intervention. Exemplary uses of machine-type communications include remote sensors, e-health, remote- controlled utility meters, surveillance cameras, toll payments, production chain automation, and the like.
  • a device can monitor the operation status of another device and report the statuses to a central server; a device can read a utility meter and provide the data to a billing department for the preparation of monthly utility bills; or a device in a car can sense that the car has passed a toll booth and transmit the information to the toll taking authority for billing purposes.
  • the amount of data being sent in MTC applications is typically smaller in size than the data present in human-initiated communication. This small amount of data traffic is a common feature across many MTC applications.
  • User equipment (UEs) that are used in an MTC configuration may spend most of their time in an idle state and need to wake up mainly to send or receive a small amount of data.
  • FIG. 1 is a flowchart illustrating the operation of an embodiment of the present invention.
  • FIG. 2 shows the frame structure of an embodiment of the present invention.
  • FIG. 3 shows the frame structure of an embodiment of the present invention.
  • FIG. 4 shows an overview of an embodiment of the present invention.
  • the terms “plurality” and “a plurality” as used herein may include, for example, “multiple” or “two or more.”
  • the terms “plurality” or “a plurality” may be used throughout the specification to describe two or more components, devices, elements, units, parameters, and the like.
  • a plurality of stations may include two or more stations.
  • 3GPP 3rd Generation Partnership Project
  • ARIB Association of Radio Industries and Business
  • CCSA China Communications Standards Association
  • 3GPP provides globally applicable standards as Technical Specifications and Technical Reports for a 3rd Generation Mobile System based on evolved GSM core networks and radio access technologies that they support (e.g., Universal Terrestrial Radio Access (UTRA) for both Frequency Division Duplex (FDD) and Time Division Duplex (TDD) modes).
  • 3GPP also provides standards for maintenance and development of the Global System for Mobile communication (GSM) as Technical Specifications and Technical Reports including evolved radio access technologies (e.g., General Packet Radio Service (GPRS) and Enhanced Data rates for GSM Evolution (EDGE)).
  • GSM Global System for Mobile communication
  • GPRS General Packet Radio Service
  • EDGE Enhanced Data rates for GSM Evolution
  • UTRA & UTRAN Long Term Evolution (UTRAN-LTE, also known as 3GPP-LTE and Evolved UTRAN (E-UTRA) was started in UTRAN-LTE.
  • UTRAN-LTE also known as 3GPP-LTE and Evolved UTRAN (E-UTRA)
  • 3GPP-LTE is based on a radio-interface incorporating orthogonal frequency division multiplex (OFDM) techniques.
  • OFDM is a digital multi- carrier modulation format that uses a large number of closely-spaced orthogonal sub-carriers to carry respective user data channels.
  • Each sub-carrier is modulated with a conventional modulation scheme, such as quadrature amplitude modulation (QAM), at a (relatively) low symbol rate when compared to the radio frequency (RF) transmission rate.
  • QAM quadrature amplitude modulation
  • RF radio frequency
  • OFDM signals are generated using the fast Fourier transform (FFT) algorithm.
  • Machine Type Communication is used for communication with user equipment (UE) without human input.
  • Some MTC UEs might spend most of their time in RRC idle state or in an extra-low power consuming state (e.g. deep idle or optimized idle state) and will mainly wake up to send or receive a small amount of data.
  • a more efficient method of operating the UEs would be desirable.
  • a UE is in a not-active state but is registered to the network.
  • the UE may be in a Radio
  • RRC Resource Control
  • the network When the network wants to trigger the UE or has a small amount of data to convey to the UE (downlink data), the network might notify the UE through the use of a paging message or even send the small data payload directly in the paging message. In addition, another newly defined message might be used in an uplink transmission to notify RRC Connection release request indication or send the small data ACK from the UE.
  • Small data payloads are typically 1 to 128 bytes in length. However, it should be understood that small data payloads may be larger in some instances.
  • FIG. 1 is a flowchart illustrating the use of a paging message to convey a small data payload to a UE.
  • UE user equipment
  • eNB evolved Node B
  • MME Management Entity
  • MME 170 sends a paging message to UE 150.
  • the paging message may contain a small data payload (102).
  • UE 150 sends an RRC Connection Request message to eNB 160, requesting the establishment of a connection (104).
  • eNB 160 replies to UE 150 with an RRC Connection Setup
  • the UE While sending the RRC Connection Setup Complete message to the eNB, the UE may include one of two defined information elements (IEs) (108), "Small Data ACK” and "RRC Release Indication.” These two IEs may perform the following actions:
  • Small Data ACK UE 150 acknowledges the small data reception (downlink data).
  • eNB 160 forwards the Small Data ACK to MME 170
  • MME 170 sends a release command to eNB 160 (112).
  • eNB 160 then sends an RRC Connection Release message to UE 150 to terminate the connection (114).
  • MME 170 sends a paging message to UE 150 with a small data payload.
  • the paging message may indicate the need to transmit small data to UE 150.
  • UE 150 sends an RRC Connection Request message to eNB 160 to perform connection establishment (104).
  • eNB 160 replies to UE 150, adding the small data payload if the paging was only indicating a future transmission (106).
  • UE 150 While sending the RRC Connection Setup Complete message to eNB 160, UE 150 may include one of two defined information elements (IES) (108): “Small Data ACK” and “RRC Release Indicator” performing the following actions:
  • MME 170 (110). MME 170 sends a release command to eNB 160 (112). eNB 160 then sends an RRC Connection Release message to UE 150 to terminate the connection (114).
  • the "RRC Connection Release" message might be sent by eNB 160 to UE 150 as an affirmative response to the RRC Release Indication sent in the RRC Connection Setup Complete message.
  • the remaining steps of FIG. 1 need not be performed because the connection between eNB 160 and UE 150 has been released.
  • UE 150 could send a new RRC message to eNB 160 at (108). This message would indicate the intention of releasing the connection and simultaneously acknowledge the reception of the small data instead of acknowledging the receipt with a RRC Connection Setup Complete message. The message could be called "RRC Connection Release Request.” This message might be replied to by the eNB using the existing "RRC Connection Release” message.
  • an RRC Connection Setup Complete message (described in 106) can be used to send a small data payload in an uplink connection.
  • UE 150 sends an RRC Connection Request to eNB 160 with a small data indicator.
  • eNB 160 replies by sending an RRC Connection Setup message to UE 150 (104).
  • the small data indicator is used by UE 150 to inform eNB 160 that the small data payload will be appended into the RRC Connection Setup Complete message (106). After UE 150 sends the RRC Connection Setup Complete message with the small data payload, if eNB 160 does not have any additional information to send to UE 150, eNB 160 will release UE 150 by sending an RRC Connection Release message (108). This RRC Connection Release message might also carry the
  • (114) may be used to send any downlink (DL) small data and acknowledgments (ACK) for uplink (UL) small data that eNB 160 has to forward to UE 150.
  • the small data indicator may be sent via the paging message.
  • eNB 160 may store the small data indicator and send it to UE 150 as part of the RRC Connection Setup Complete message.
  • eNB 160 When eNB 160 receives the first UL Network Access Stratum (NAS) message from the radio interface, eNB 160 invokes NAS Transport procedure. It sends the INITIAL UE MESSAGE message to MME 170 including the NAS message as a NAS Protocol Data Unit (NAS-PDU)
  • NAS-PDU NAS Protocol Data Unit
  • the Initial UE message format is defined in section 36.413 of the 3GPP specification. This message is sent by the eNB to transfer the initial layer 3 message to the MME over the SI interface.
  • SDC Small Data Container
  • IE Information Element
  • the Small Data ACK IEI field (202) is the identifier of the Small Data ACK IE.
  • the size is one octet.
  • the result field (204) indicates the success or failure of the transmission.
  • the size is one octet.
  • the Small Data Container (SDC) IE is defined to send small data on NAS signaling messages.
  • SDC IE is included as an optional IE in the 'Initial UE Message' message content.
  • the Small Data Container IEI field (302) is the identifier of this Small Data Container IE.
  • the size is one octet (8 bits).
  • Length of Small Data Container field (304) is the size of the small data that would be included in this IE.
  • the size of this field is two octets (16 bits).
  • Payload field (306) Carries the small data payload that needs to be transmitted to / from the network.
  • the size of this field varies from 1 to 128 octets (8 bits to 1024 bits), depending on the amount of data to be sent.
  • the SDC IE is a type 6 information element. A detailed explanation on the different types of information element is described in section 24.007 of the 3GPP Technical Specification.
  • FIG. 4 shows a block diagram of an exemplary UE that is capable of performing embodiments of the invention.
  • a UE 400 includes a processor 402.
  • Processor 402 is arranged to perform instructions that may be contained in a memory 450.
  • the UE may also comprise a transceiver 430 and an antenna assembly 440.
  • Processor 402 may be arranged to perform calculations and other operations on signals, then send those signals to transceiver 430, which prepares the signals for transmission outside the UE via antenna assembly 440. Signals from outside the UE may be received by antenna assembly 440. These signals would then proceed through transceiver 430 to processor 402 for processing.
  • a UE 400 may contain other elements that are not shown in FIG. 4, such as user interface inputs (e.g., touch screens and/or buttons) and outputs (e.g., a displays, speakers, etc.).
  • the RRC Connection Setup Complete message may contain new information elements.
  • the RRC Connection Setup Complete message may contain several new messages, including smallDataAck, rrcRelease-Indication, and nonCriticalExtension.
  • a SmallDataRelease message may comprise smallDataPayload and nonCriticalExtension information elements.
  • the RRC Connection Release message may also contain new information elements. Similarly, other messages may be referred to both with and without spaces.
  • the RRCConnectionRelease includes SmallDataRelease, smallDataAck, and nonCriticalExtension information elements.
  • the SmallDataRelease information element may contain
  • the RRCConnectionReleaseRequest message may also contain new information elements.
  • the RRCConnectionReleaseRequest message may also contain new information elements.
  • RRCConnectionReleaseRequest message includes RRC-Transactionldentifier, SmallDataRelease, and SmallDataPayload information elements.
  • Another new information element may be the AccessCause information element, which may be used along with the RRCConnectionRequest message.
  • user equipment may comprise: a processor arranged to: receive a request to send a small data pay load to the UE; send a Radio Resource Control (RRC) Connection Request message to an evolved Node B (eNB); receive an RRC Connection Setup message from the eNB; send an RRC Connection Setup Complete message to the eNB; and receive an RRC Connection Release message from the eNB.
  • RRC Radio Resource Control
  • the RRC Connection Setup message comprises a small data payload; and the RRC
  • Connection Setup Complete message comprises a Small Data ACK message arranged to indicate the receipt of the small data payload.
  • the UE may be arranged to perform Machine Type
  • the request to send a small data payload to the UE comprises the small data payload.
  • the request to send a small data payload to the UE comprises a Small Data Indicator arranged to inform the UE of the need to receive a Small Data payload.
  • the small data payload comprises data less than or equal to 128 octets in length.
  • the UE is further arranged to receive an RRC
  • the RRC Connection Release message is received from an eNB.
  • the RRC Connection Release Request message comprises a Small Data ACK message arranged to indicate the receipt of the small data payload.
  • the RRC Connection Request message comprises a small data indicator arranged to indicate that the UE has a second small data payload to send to the eNB; and the RRC Connection Setup Complete message comprises the second small data payload.
  • the RRC Connection Setup message comprises an indicator arranged to indicate the presence of a small data payload; and the RRC Connection Release message comprises the small data payload.
  • a method for sending a small data payload to a user equipment may comprise: sending a paging message to the UE; receiving a Radio Resource Control (RRC) Connection Request message; sending an RRC Connection Setup message to the UE; receiving an RRC Connection Setup Complete message; and sending an RRC Connection Release message; wherein: the paging message comprises a small data payload; and the RRC Connection Setup Complete message comprises a Small Data ACK message arranged to indicate the receipt of the small data payload.
  • RRC Radio Resource Control
  • the paging message comprises a small data indictor; and the RRC Connection Setup message comprises a small data payload.
  • the RRC Connection Request message may comprise an indication that the UE wishes to send an uplink small data payload;
  • the RRC Connection Setup Complete message comprises the uplink small data payload;
  • the RRC Connection Release message comprises an
  • the small data payload may comprise data less than or equal to 128 octets.
  • the small data payload may comprise a small data container information element (IE) comprising: a small data container information element identifier field; a field arranged to indicate the length of the small data container; and a payload field arranged to contain the small data payload.
  • IE small data container information element
  • the small data container information element identifier field has a length of 1 octet; the field arranged to indicate the length of the small data container has a length of 2 octets; and the payload field has a length that is between 1 octet and 128 octets.
  • the Small Data ACK message comprises a Small Data ACK information element comprising: a Small Data ACK identifier field with a length of 1 octet; and a Result field with a length of 1 octet.
  • a method for sending a small data payload to a UE may comprise: sending a paging message to the UE; receiving an RRC Connection Request message; sending an RRC Connection Setup message to the UE; receiving an RRC Connection Setup Complete message; and sending an RRC Connection Release message; wherein: the RRC Connection Release Request message comprises a Small Data ACK message arranged to indicate the receipt of the small data payload.
  • a method for a UE to receive a small data payload may comprise: receiving a paging message from an MME; sending an
  • the RRC Connection Setup Complete Message may comprise a small data payload.
  • the RRC Connection Setup Complete message may further comprise an indication that the UE has received the small data payload. [0065] In one embodiment, the RRC Connection Setup Complete message may further comprises a request to release a connection between the UE and the eNB.
  • the UE may also send an RRC Connection Release Request message to the eNB after sending the RRC Connection Setup Complete message.
  • the UE may also release a connection between the UE and the eNB after receiving an RRC Connection Release message from the eNB.
  • the RRC Connection Release message may comprise a small data payload.
PCT/US2013/044445 2012-08-03 2013-06-06 Apparatus and method for small data transmission in 3gpp-lte systems WO2014021987A1 (en)

Priority Applications (12)

Application Number Priority Date Filing Date Title
EP13825895.9A EP2880784B1 (en) 2012-08-03 2013-06-06 Apparatus and method for small data transmission in 3gpp-lte systems
KR1020147036954A KR20150016612A (ko) 2012-08-03 2013-06-06 3gpp-lte 시스템에서 스몰 데이터 송신을 위한 장치 및 방법
KR1020167005515A KR101721031B1 (ko) 2012-08-03 2013-06-06 3gpp-lte 시스템에서 스몰 데이터 송신을 위한 장치 및 방법
IT001289A ITMI20131289A1 (it) 2012-08-03 2013-07-31 Apparato e metodo per la trasmissione di piccoli dati in sistemi 3gpp-lte
TW102127609A TWI503032B (zh) 2012-08-03 2013-08-01 用於在第三代合作夥伴計劃長期演進（３ｇｐｐ－ｌｔｅ）系統中之小資料傳輸的設備與方法
FR1357687A FR2994357A1 (fr) 2012-08-03 2013-08-01 Titre non renseigne
BE2013/0521A BE1021410B1 (fr) 2012-08-03 2013-08-02 Appareil et procede pour une petite transmission de donnees dans des systemes 3gpp-lte
ES201331208A ES2481265B2 (es) 2012-08-03 2013-08-02 Aparato y procedimiento para transmisión de datos pequeños en sistemas 3GPP-LTE
FI20135807A FI20135807L (fi) 2012-08-03 2013-08-02 Laite ja menetelmä pienen tietomäärän lähettämiseen 3GPP-LTE järjestelmissä
SE1350931A SE540741C2 (sv) 2012-08-03 2013-08-02 Anordning och metod för sändning av liten datamängd i 3GPP-LTE system
NL2011257A NL2011257C2 (en) 2012-08-03 2013-08-02 Apparatus and method for small data transmission in 3gpp-lte systems.
CN201310336123.8A CN103582006B (zh) 2012-08-03 2013-08-05 用于3gpp‑lte系统中的小数据传输的设备和方法

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US201261679627P 2012-08-03 2012-08-03
US61/679,627 2012-08-03
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EP2880784A4 (en) 2016-03-09
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TWI503032B (zh) 2015-10-01
ES2481265B2 (es) 2015-05-26
US9100160B2 (en) 2015-08-04
NL2011257A (en) 2014-02-04
CN103582006A (zh) 2014-02-12
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ITMI20131289A1 (it) 2014-02-04
US20140036795A1 (en) 2014-02-06
KR101721031B1 (ko) 2017-03-29
NL2011257C2 (en) 2014-08-05
ES2481265R1 (es) 2014-10-06
SE540741C2 (sv) 2018-10-30
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US20160192408A1 (en) 2016-06-30
KR20150016612A (ko) 2015-02-12
FR2994357A1 (fr) 2014-02-07
EP2880784A1 (en) 2015-06-10
EP2880784B1 (en) 2022-08-24
BE1021410B1 (fr) 2015-11-18
ES2481265A2 (es) 2014-07-29

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